US20030047021A1 - Gear shift mechanism - Google Patents
Gear shift mechanism Download PDFInfo
- Publication number
- US20030047021A1 US20030047021A1 US10/235,579 US23557902A US2003047021A1 US 20030047021 A1 US20030047021 A1 US 20030047021A1 US 23557902 A US23557902 A US 23557902A US 2003047021 A1 US2003047021 A1 US 2003047021A1
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- US
- United States
- Prior art keywords
- actuator
- gear shift
- shift mechanism
- actuators
- sliding sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/3023—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H2063/3079—Shift rod assembly, e.g. supporting, assembly or manufacturing of shift rails or rods; Special details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
- F16H2063/325—Rocker or swiveling forks, i.e. the forks are pivoted in the gear case when moving the sleeve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/19219—Interchangeably locked
- Y10T74/19251—Control mechanism
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20012—Multiple controlled elements
- Y10T74/20018—Transmission control
- Y10T74/20024—Fluid actuator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20012—Multiple controlled elements
- Y10T74/20018—Transmission control
- Y10T74/20177—Particular element [e.g., shift fork, template, etc.]
Definitions
- the present invention relates to a gear shift mechanism.
- German Patent Document 39 274 C1 a transmission is known in which a first and a second shiftable gear wheel are rotatably disposed on an input shaft. Between the two gear wheels, a fixed sleeve is arranged which is non-rotatably connected with the input shaft. On the fixed sleeve, a sliding sleeve is axially displaceably arranged which can take up three shifting positions, specifically a center or neutral position as well as a first or second shifting position in which the first or second gear wheel is non-rotatably connected by way of the sliding sleeve and the fixed sleeve with the shaft.
- a groove is provided on its outer circumference into which a “displacement device”, that is, a shift fork engages which is connected with a shift rod and which can be operated by the driver by way of a gear shift lever.
- a gear is shifted in which an interlocking connection is established between a gear wheel and the assigned shaft.
- a torque can be transmitted by way of this “path”.
- Such a “connection element” has an interior part or a fixed sleeve, with an external toothing having teeth arranged in the axial direction, as well as an axially displaceable exterior part or a sliding sleeve, with an internal toothing having teeth also aligned in the axial direction.
- the interior part and the exterior part are in a constant engagement.
- a gear wheel can be connected, that is, can be connected with the shaft in the rotating direction in an interlocking manner by way of the fixed sleeve.
- shift rocker carries out a swinging motion about an axis which is perpendicular to the longitudinal axis of the sliding sleeve but which does not intersect with the longitudinal axis.
- the shift rocker has movably arranged rocker arms which engage in a ring groove extending around the outer circumference of the sliding sleeve and which, during a tilting or swinging motion of the shift rocker, displace the sliding sleeve in the axial direction.
- shift fork As an alternative to a shift rocker, a so-called “shift fork” can be provided for operating the sliding sleeve.
- the shift fork is form-fittingly disposed on a shift rod used for its bearing and guidance.
- the shift fork engages in the ring groove extending around the outer circumference of the slicing sleeve, which causes a “taking-along” of the sliding sleeve during an axial displacement.
- An axially displaceable shaft with a driving finger form-fittingly disposed thereon which is indicated to be a so-called “shifting shaft”, normally moves the shift rocker or the shift rod with its shift fork out of the neutral position.
- Applicants are internally aware of an automated gear shift mechanism which is based on a conventional gear shift mechanism, in which case, by means of hydraulic actuators, the shifting shaft can, on the one hand, be axially displaced and, on the other hand, be rotated for the selection of the shifting channel.
- the basic principle of the invention consists of a gear shift mechanism with a “displacement device”, which can be operated by an actuator, for the actual displacing of a sliding sleeve, the actuator being connected by way of at least one joint with the displacement device.
- a “displacement device” which can be operated by an actuator, for the actual displacing of a sliding sleeve, the actuator being connected by way of at least one joint with the displacement device.
- shifting channels are normally situated side-by-side, to which one shift rocker or one shift rod respectively having a shift fork are assigned.
- a separate actuator is assigned to each shifting channel, which permits a separate control of the shift rockers or shift rods and shift forks of the individual shifting channels.
- the actuator or the actuator piston is connected by way of an intermediate element and two joints with the displacement device.
- the actuator may be arranged diagonally with respect to the shifting channel.
- the actuator can be arranged to be offset in parallel with respect to the shifting channel.
- FIGS. 1 to 4 are views of a gear shift mechanism having a shift rocker
- FIGS. 5 to 8 are views of a gear shift mechanism having a shift fork and a shift rod
- FIG. 9 is a view of a gear shift mechanism having two joints and an intermediate element.
- FIG. 10 is a view of a gear shift mechanism having one joint.
- FIGS. 1 to 4 illustrate a gear shift mechanism in which a fixed sleeve 2 is non-rotatably arranged on a shaft 1 .
- a sliding sleeve 3 is non-rotatably and axially displaceably arranged on the fixed sleeve 2 .
- the sliding sleeve 3 is displaceable along an axis of rotation or longitudinal axis 4 .
- a surrounding groove 5 is provided at the outer circumference of the sliding sleeve 3 .
- rocker arms 6 , 7 are provided which engage in the surrounding groove 5 .
- the rocker arms 6 , 7 are disposed in a U-shaped shift rocker 8 which can be swung about a swinging axis 9 .
- FIGS. 2 and 3 indicate that, by swinging the shift rocker 8 into a left or right swinging position, the sliding sleeve 3 is axially displaced by the rocker arms 6 , 7 .
- the sliding sleeve 3 can be engaged with a gear wheel not shown here and, as a result, can be non-rotatably connected with the fixed sleeve 2 or the shaft 1 .
- FIGS. 5 to 8 illustrate a gear shift mechanism having a shift fork and a shift rod.
- the fixed sleeve 2 is non-rotatably connected with the shaft 1 .
- the sliding sleeve 3 is non-rotatably and axially displaceably arranged on the fixed sleeve 2 .
- a shift fork 10 which is displaceable along the longitudinal axis 4 , engages in the groove 5 of the sliding sleeve 3 , which groove 5 extends around the outer circumference.
- a shift rod 11 is provided which is fixedly connected with the shift fork 10 .
- a non-rotatable connection can be established between a gear wheel not shown here and the fixed sleeve 2 or the shaft 1 by way of the sliding sleeve 3 .
- FIG. 9 shows a gear shift mechanism having three shifting channels 12 , 13 and 14 respectively.
- a shift rod 15 to 17 is assigned to each of the shifting channels 12 to 14 .
- the shift rods 15 to 17 each operate an assigned shift fork 18 to 20 .
- assigned sliding sleeves can be operated, and gear wheels, which are not shown here, of the individual shifting channels 12 to 14 can be shifted.
- the shift rods 15 to 17 can be operated here by one separate actuator 21 to 23 , respectively.
- the actuators each consist of a hydraulic cylinder 24 to 26 and of a hydraulic piston 27 to 29 , which can be axially displaced thereto.
- the “center actuator” 22 is arranged coaxially with respect to the center shifting channel 13 , the hydraulic piston 28 being connected here directly, that is, “rigidly”, with the assigned shift rod 16 .
- the two exterior actuators 21 , 23 are offset in parallel with respect to the shifting channel 12 or 14 .
- an articulated connection is provided for compensating the axial offset of the hydraulic pistons 27 and 29 with respect to the shift rods 15 and 17 , respectively.
- the hydraulic pistons 27 and 29 are in each case connected by way of a first joint 30 and 31 , respectively, with an assigned intermediate element 32 and 33 , respectively, which here, in each case, is a simple rod.
- the intermediate element 32 and 33 is connected by way of an assigned second joint 34 , 35 , respectively, with the shift rod 15 and 17 , respectively.
- the actuators 21 and 23 can be arranged side-by-side virtually independently of the spacing of the shifting channels 12 to 14 , whereby a very compact construction is achieved.
- FIG. 10 shows a variant of the invention. Analogous to the embodiment of FIG. 9, here also, three shifting channels 12 to 14 are provided to which one shift rod 15 to 17 , respectively, as well as one shift fork 18 to 20 , respectively, are assigned.
- the center shift fork 16 can be operated by the actuator 22 arranged coaxially thereto, in which case, corresponding to FIG. 9, the hydraulic piston 28 is rigidly connected with the shift fork 16 .
- the two exterior actuators 21 and 23 are arranged diagonally with respect to the shifting channels 12 to 14 . Furthermore, the assigned hydraulic pistons 27 and 29 are in each case connected only by way of a joint 34 and 35 , respectively, with their assigned shift fork 15 , 17 , respectively.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
A gear shift mechanism has a displacement device, which can be operated by an actuator, for the axial displacing of a sliding sleeve. The actuator is connected with the displacement device by way of at least one joint. Such an articulated connection between the actuator and the displacement device permits a greater freedom with respect to the spatial arrangement of the actuator and thus a very compact construction.
Description
- This application claims the priority of German Patent Document No. 101 43 885.0, filed Sep. 7, 2001, the disclosure of which is expressly incorporated by reference herein.
- The present invention relates to a gear shift mechanism.
- From German Patent Document 39 274 C1, a transmission is known in which a first and a second shiftable gear wheel are rotatably disposed on an input shaft. Between the two gear wheels, a fixed sleeve is arranged which is non-rotatably connected with the input shaft. On the fixed sleeve, a sliding sleeve is axially displaceably arranged which can take up three shifting positions, specifically a center or neutral position as well as a first or second shifting position in which the first or second gear wheel is non-rotatably connected by way of the sliding sleeve and the fixed sleeve with the shaft. For operating the sliding sleeve, a groove is provided on its outer circumference into which a “displacement device”, that is, a shift fork engages which is connected with a shift rod and which can be operated by the driver by way of a gear shift lever.
- As explained, for example, in the above-mentioned German Patent Document DE 39 274 C1, in gear change boxes without planetary gear trains, a gear is shifted in which an interlocking connection is established between a gear wheel and the assigned shaft. When the connection between the gear wheel and the shaft is closed, a torque can be transmitted by way of this “path”. Such a “connection element” has an interior part or a fixed sleeve, with an external toothing having teeth arranged in the axial direction, as well as an axially displaceable exterior part or a sliding sleeve, with an internal toothing having teeth also aligned in the axial direction. The interior part and the exterior part are in a constant engagement. As a result of an axial displacing of the sliding sleeve, a gear wheel can be connected, that is, can be connected with the shaft in the rotating direction in an interlocking manner by way of the fixed sleeve.
- During the excursion from the neutral position, the sliding sleeve is moved so far in the axial direction that, on the one hand, it is still engaged with the fixed sleeve but, on the other hand, it also dips with its internal toothing into the assigned toothing of the component “to be coupled”.
- The excursion of the sliding sleeve from its center or neutral position takes place, for example, by means of a so-called “shift rocker”. A shift rocker carries out a swinging motion about an axis which is perpendicular to the longitudinal axis of the sliding sleeve but which does not intersect with the longitudinal axis. The shift rocker has movably arranged rocker arms which engage in a ring groove extending around the outer circumference of the sliding sleeve and which, during a tilting or swinging motion of the shift rocker, displace the sliding sleeve in the axial direction.
- As an alternative to a shift rocker, a so-called “shift fork” can be provided for operating the sliding sleeve. The shift fork is form-fittingly disposed on a shift rod used for its bearing and guidance. The shift fork engages in the ring groove extending around the outer circumference of the slicing sleeve, which causes a “taking-along” of the sliding sleeve during an axial displacement.
- An axially displaceable shaft with a driving finger form-fittingly disposed thereon, which is indicated to be a so-called “shifting shaft”, normally moves the shift rocker or the shift rod with its shift fork out of the neutral position.
- Applicants are internally aware of an automated gear shift mechanism which is based on a conventional gear shift mechanism, in which case, by means of hydraulic actuators, the shifting shaft can, on the one hand, be axially displaced and, on the other hand, be rotated for the selection of the shifting channel.
- It is an object of the present invention to provide a shift mechanism which has a compact construction and an expanded functionality.
- The basic principle of the invention consists of a gear shift mechanism with a “displacement device”, which can be operated by an actuator, for the actual displacing of a sliding sleeve, the actuator being connected by way of at least one joint with the displacement device. Such an “articulated connection” between the actuator and the “displacement device” permits a greater “freedom” with respect to the spatial arrangement of the actuator and thus a very compact construction.
- In the case of a motor vehicle transmission, several shifting channels are normally situated side-by-side, to which one shift rocker or one shift rod respectively having a shift fork are assigned. Preferably, a separate actuator is assigned to each shifting channel, which permits a separate control of the shift rockers or shift rods and shift forks of the individual shifting channels. This has the advantage that, in certain operating situations, more than one gear “can start to be synchronized” simultaneously. Another advantage is the fact that several gears can be skipped without any problem and without unacceptably long shifting times. In addition, the disengaging of a gear and the engaging of another gear can take place in an overlapping manner without respect to time, which permits shorter shifting times.
- However, in modern vehicle transmissions, the installation of several actuators frequently represents a space problem. The shift rods of the individual shifting channels are usually situated very closely side-by-side or the mutual spacing of the shift rockers is not sufficient for the installation of an actuator. As a result of the above-explained articulated connection of the actuator with their assigned “displacement device”, the space problem will be solved. The reason is that, as a result of the articulated connection, the actuators do not need to be arranged coaxially with respect to the individual shifting channels. Thus, several actuators can be arranged side-by-side without any problem.
- According to the invention, two subvariants exist, specifically:
- a) individual actuators are connected directly by way of a single joint with the displacement device; that is, the actuator piston is connected directly by way of the joint with the displacement device; and
- b) the actuator or the actuator piston is connected by way of an intermediate element and two joints with the displacement device.
- The articulated connection permits different actuator arrangements. In the case of the variant
- a) with a joint, the actuator may be arranged diagonally with respect to the shifting channel. In the case of the variant
- b) with two joints and an intermediate element, the actuator can be arranged to be offset in parallel with respect to the shifting channel.
- Other objects, advantages and novel features of the present invention will become apparent from the following detailed description of the invention when considered in conjunction with the accompanying drawings.
- In the following, the invention will be explained in detail by means of embodiments in connection with the drawings, in which:
- FIGS.1 to 4 are views of a gear shift mechanism having a shift rocker;
- FIGS.5 to 8 are views of a gear shift mechanism having a shift fork and a shift rod;
- FIG. 9 is a view of a gear shift mechanism having two joints and an intermediate element; and
- FIG. 10 is a view of a gear shift mechanism having one joint.
- FIGS.1 to 4 illustrate a gear shift mechanism in which a
fixed sleeve 2 is non-rotatably arranged on ashaft 1. Asliding sleeve 3 is non-rotatably and axially displaceably arranged on the fixedsleeve 2. The slidingsleeve 3 is displaceable along an axis of rotation orlongitudinal axis 4. A surroundinggroove 5 is provided at the outer circumference of thesliding sleeve 3. On mutually opposite sides of thesliding sleeve 3,rocker arms groove 5. Therocker arms shift rocker 8 which can be swung about a swinging axis 9. - FIGS. 2 and 3 indicate that, by swinging the
shift rocker 8 into a left or right swinging position, thesliding sleeve 3 is axially displaced by therocker arms sliding sleeve 3, the latter can be engaged with a gear wheel not shown here and, as a result, can be non-rotatably connected with thefixed sleeve 2 or theshaft 1. - FIGS.5 to 8 illustrate a gear shift mechanism having a shift fork and a shift rod. Corresponding to FIGS. 1 to 4, the
fixed sleeve 2 is non-rotatably connected with theshaft 1. On thefixed sleeve 2, thesliding sleeve 3 is non-rotatably and axially displaceably arranged on the fixedsleeve 2. Here, ashift fork 10, which is displaceable along thelongitudinal axis 4, engages in thegroove 5 of thesliding sleeve 3, whichgroove 5 extends around the outer circumference. For the axial displacement of theshift fork 10, ashift rod 11 is provided which is fixedly connected with theshift fork 10. As a result of the axial displacement, a non-rotatable connection can be established between a gear wheel not shown here and thefixed sleeve 2 or theshaft 1 by way of the slidingsleeve 3. - FIG. 9 shows a gear shift mechanism having three shifting
channels shift rod 15 to 17 is assigned to each of the shiftingchannels 12 to 14. Theshift rods 15 to 17 each operate an assignedshift fork 18 to 20. By way of theshift forks 18 to 20, assigned sliding sleeves can be operated, and gear wheels, which are not shown here, of theindividual shifting channels 12 to 14 can be shifted. - The
shift rods 15 to 17 can be operated here by oneseparate actuator 21 to 23, respectively. The actuators each consist of ahydraulic cylinder 24 to 26 and of ahydraulic piston 27 to 29, which can be axially displaced thereto. - The “center actuator”22 is arranged coaxially with respect to the
center shifting channel 13, thehydraulic piston 28 being connected here directly, that is, “rigidly”, with the assignedshift rod 16. In contrast, the twoexterior actuators channel hydraulic pistons shift rods hydraulic pistons intermediate element intermediate element shift rod - Because of the articulated connection of the
actuators shift rods actuators channels 12 to 14, whereby a very compact construction is achieved. - FIG. 10 shows a variant of the invention. Analogous to the embodiment of FIG. 9, here also, three shifting
channels 12 to 14 are provided to which oneshift rod 15 to 17, respectively, as well as oneshift fork 18 to 20, respectively, are assigned. - The
center shift fork 16 can be operated by theactuator 22 arranged coaxially thereto, in which case, corresponding to FIG. 9, thehydraulic piston 28 is rigidly connected with theshift fork 16. - In contrast to FIG. 9, the two
exterior actuators channels 12 to 14. Furthermore, the assignedhydraulic pistons shift fork - The foregoing disclosure has been set forth merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the spirit and substance of the invention may occur to persons skilled in the art, the invention should be construed to include everything within the scope of the appended claims and equivalents thereof.
Claims (17)
1. A gear shift mechanism comprising:
a fixed sleeve which is non-rotatably connected with a shaft;
a sliding sleeve which is non-rotatably and axially displaceably along a longitudinal axis of the sliding sleeve arranged on the fixed sleeve;
a displacement device for axial displacement of the sliding sleeve; and
an actuator for operating the displacement device;
wherein the actuator is connected by way of at least one joint with the displacement device.
2. The gear shift mechanism according to claim 1 ,
wherein the actuator has a longitudinally displaceable actuator piston.
3. The gear shift mechanism according to claim 1 ,
wherein the actuator is arranged to be offset from and parallel to the longitudinal axis of the sliding sleeve.
4. The gear shift mechanism according to claim 3 ,
wherein the actuator is connected by way of a first joint with an intermediate element arranged diagonally with respect to the longitudinal axis of the sliding sleeve and wherein the intermediate element is connected by way of a second joint with the displacement device.
5. The gear shift mechanism according to claim 1 ,
wherein the actuator is arranged diagonally with respect to the longitudinal axis of the sliding sleeve and wherein the actuator is connected by way of a single joint with the displacement device.
6. The gear shift mechanism according to claim 1 ,
wherein three shifting channels are provided and wherein one fixed sleeve, one sliding sleeve, one displacement device and one actuator are assigned to each of the three shifting channels.
7. The gear shift mechanism according to claim 6 ,
wherein the actuators of the three shifting channels are arranged side-by-side.
8. The gear shift mechanism according to claim 6 ,
wherein two exterior actuators of the three actuators are arranged diagonally with respect to a longitudinal axis of the assigned sliding sleeve and wherein a center actuator of the three actuators is arranged coaxially with respect to a longitudinal axis of its assigned sliding sleeve and is rigidly connected with its assigned displacement device.
9. The gear shift mechanism according to claim 6 ,
wherein the three actuators are arranged parallel to one another and wherein two exterior actuators of the three actuators are arranged offset from and parallel to a longitudinal axis of the respectively assigned shifting channel and wherein a center actuator of the three actuators is arranged coaxially with respect to the assigned center shifting channel.
10. The gear shift mechanism according to claim 1 ,
wherein the actuator is an electrically controllable hydraulic piston.
11. The gear shift mechanism according to claim 1 ,
wherein a groove is provided at an outer circumference of the sliding sleeve and wherein the displacement device engages in the groove.
12. The gear shift mechanism according to claim 11 ,
wherein the displacement device is formed by a shift fork and a shift rod connected therewith, the shift fork engaging in the groove.
13. The gear shift mechanism according to claim 11 ,
wherein the displacement device is formed by a shift rocker and rocker arms connected therewith in an articulated manner and wherein the rocker arms engage in the groove.
14. The gear shift mechanism according to claim 2 ,
wherein the actuator is arranged to be offset from and parallel to the longitudinal axis of the sliding sleeve.
15. The gear shift mechanism according to claim 2 ,
wherein the actuator is arranged diagonally with respect to the longitudinal axis of the sliding sleeve and wherein the actuator is connected by way of a single joint with the displacement device.
16. The gear shift mechanism according to claim 7 ,
wherein two exterior actuators of the three actuators are arranged diagonally with respect to a longitudinal axis of the assigned sliding sleeve and wherein a center actuator of the three actuators is arranged coaxially with respect to a longitudinal axis of its assigned sliding sleeve and is rigidly connected with its assigned displacement device.
17. The gear shift mechanism according to claim 7 ,
wherein the three actuators are arranged parallel to one another and wherein two exterior actuators of the three actuators are arranged offset from and parallel to a longitudinal axis of the respectively assigned shifting channel and wherein a center actuator of the three actuators is arranged coaxially with respect to the assigned center shifting channel.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10143885.0 | 2001-09-07 | ||
DE10143885A DE10143885A1 (en) | 2001-09-07 | 2001-09-07 | Transmission shifting device |
Publications (2)
Publication Number | Publication Date |
---|---|
US20030047021A1 true US20030047021A1 (en) | 2003-03-13 |
US6854353B2 US6854353B2 (en) | 2005-02-15 |
Family
ID=7698045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/235,579 Expired - Fee Related US6854353B2 (en) | 2001-09-07 | 2002-09-06 | Gear shift mechanism |
Country Status (5)
Country | Link |
---|---|
US (1) | US6854353B2 (en) |
EP (1) | EP1291560B1 (en) |
JP (1) | JP2003083446A (en) |
DE (2) | DE10143885A1 (en) |
ES (1) | ES2239188T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US20070137336A1 (en) * | 2003-08-21 | 2007-06-21 | Burk John P | Gear selector mechanisms |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US20080229873A1 (en) * | 2005-11-10 | 2008-09-25 | Volvo Construction Equipment Holding Sweden Ab | Shift Member and Gear Shifting Arrangement Comprising the Shift Member |
DE102006006868A1 (en) * | 2006-02-15 | 2007-08-16 | Zf Friedrichshafen Ag | Switching device for switching a motor vehicle transmission |
DE102006031265A1 (en) * | 2006-07-06 | 2008-01-17 | Zf Friedrichshafen Ag | Arrangement of a hydraulically actuated shift actuator |
JP5084546B2 (en) * | 2007-02-27 | 2012-11-28 | Juki株式会社 | Method for manufacturing sleeve for hydrodynamic bearing and sleeve for hydrodynamic bearing |
DE102007013929A1 (en) * | 2007-03-23 | 2008-09-25 | Zf Friedrichshafen Ag | Arrangement of a rocker arm in a transmission |
KR101543169B1 (en) * | 2014-08-01 | 2015-08-13 | 현대자동차주식회사 | Structure of dual shift fork |
JP6756073B2 (en) * | 2017-03-02 | 2020-09-16 | 株式会社神戸製鋼所 | Speed switching reducer |
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US3991845A (en) * | 1974-10-15 | 1976-11-16 | Lapointe Roger F | Remote shift |
US4445393A (en) * | 1982-01-18 | 1984-05-01 | Eaton Corporation | Fluid actuated shift bar housing assembly |
US4998443A (en) * | 1987-11-02 | 1991-03-12 | Ab Volvo | Control system for automatic gearboxes in which gear changes are effected stepwise |
US5012725A (en) * | 1990-04-19 | 1991-05-07 | Rockwell International Corporation | Three position actuator for shifting a two speed transfer case |
US5239897A (en) * | 1991-05-30 | 1993-08-31 | Mercedes-Benz Ag | Automatic selector device for a multi-gear change-speed gearbox |
US5417124A (en) * | 1991-11-08 | 1995-05-23 | Iveco Fiat S.P.A. | Gear change for an industrial vehicle provided with an integrated control unit |
US6189402B1 (en) * | 1997-12-09 | 2001-02-20 | Isuzu Motors Limited | Gear transmission |
US6318206B1 (en) * | 1999-04-28 | 2001-11-20 | INA Wälzlager Schaeffler oHG | Shift rocker |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE39274C (en) | W. J. WOODLEY in San Francisco, Californien, V. St. A. und Ch. H. F. Reed in Oakland, CalifornienJ V.-St. A | Innovation in the device known from patent specification No. 29788 for the convenient tapping of barrels and the like | ||
DE1780027A1 (en) * | 1968-07-24 | 1971-12-30 | Zahnradfabrik Friedrichshafen | Gearboxes for motor vehicles |
DE19507704A1 (en) * | 1995-03-04 | 1996-09-05 | Hydraulik Ring Gmbh | Actuator for manual transmissions of motor vehicles |
-
2001
- 2001-09-07 DE DE10143885A patent/DE10143885A1/en not_active Withdrawn
-
2002
- 2002-08-08 JP JP2002231696A patent/JP2003083446A/en active Pending
- 2002-08-28 ES ES02019276T patent/ES2239188T3/en not_active Expired - Lifetime
- 2002-08-28 DE DE50203182T patent/DE50203182D1/en not_active Expired - Lifetime
- 2002-08-28 EP EP02019276A patent/EP1291560B1/en not_active Expired - Lifetime
- 2002-09-06 US US10/235,579 patent/US6854353B2/en not_active Expired - Fee Related
Patent Citations (9)
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US2510697A (en) * | 1946-05-15 | 1950-06-06 | Oil Well Supply Co | Clutch shifter |
US3991845A (en) * | 1974-10-15 | 1976-11-16 | Lapointe Roger F | Remote shift |
US4445393A (en) * | 1982-01-18 | 1984-05-01 | Eaton Corporation | Fluid actuated shift bar housing assembly |
US4998443A (en) * | 1987-11-02 | 1991-03-12 | Ab Volvo | Control system for automatic gearboxes in which gear changes are effected stepwise |
US5012725A (en) * | 1990-04-19 | 1991-05-07 | Rockwell International Corporation | Three position actuator for shifting a two speed transfer case |
US5239897A (en) * | 1991-05-30 | 1993-08-31 | Mercedes-Benz Ag | Automatic selector device for a multi-gear change-speed gearbox |
US5417124A (en) * | 1991-11-08 | 1995-05-23 | Iveco Fiat S.P.A. | Gear change for an industrial vehicle provided with an integrated control unit |
US6189402B1 (en) * | 1997-12-09 | 2001-02-20 | Isuzu Motors Limited | Gear transmission |
US6318206B1 (en) * | 1999-04-28 | 2001-11-20 | INA Wälzlager Schaeffler oHG | Shift rocker |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070137336A1 (en) * | 2003-08-21 | 2007-06-21 | Burk John P | Gear selector mechanisms |
Also Published As
Publication number | Publication date |
---|---|
JP2003083446A (en) | 2003-03-19 |
US6854353B2 (en) | 2005-02-15 |
EP1291560A2 (en) | 2003-03-12 |
ES2239188T3 (en) | 2005-09-16 |
EP1291560A3 (en) | 2004-04-21 |
EP1291560B1 (en) | 2005-05-25 |
DE50203182D1 (en) | 2005-06-30 |
DE10143885A1 (en) | 2003-03-27 |
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